G01N 33/1806
Biological oxygen demand [bod] or chemical oxygen demand [cod]
Official title: {Biological oxygen demand [BOD] or chemical oxygen demand [COD]}
G01N33/1806 (Biological oxygen demand [bod] or chemical oxygen demand [cod]) appears on 149 US grants and 125 published applications in this corpus.
Search patents in G01N- Granted patents
- 149
- Published applications
- 125
- Assignees
- 129
- Inventors
- 395
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 5 |
| 2003 | 3 | 2 |
| 2004 | 4 | 1 |
| 2005 | 2 | 4 |
| 2006 | 1 | 5 |
| 2007 | 0 | 1 |
| 2008 | 2 | 6 |
| 2009 | 1 | 3 |
| 2010 | 3 | 5 |
| 2011 | 5 | 5 |
| 2012 | 4 | 2 |
| 2013 | 2 | 3 |
| 2014 | 0 | 6 |
| 2015 | 5 | 12 |
| 2016 | 2 | 3 |
| 2017 | 5 | 9 |
| 2018 | 3 | 5 |
| 2019 | 6 | 9 |
| 2020 | 3 | 8 |
| 2021 | 5 | 6 |
| 2022 | 8 | 8 |
| 2023 | 5 | 7 |
| 2024 | 4 | 5 |
| 2025 | 7 | 4 |
| 2026 | 6 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Biosensor for water toxicity monitoring11 Aug 2026US 12,704,493 B2National Research Council of Canada
- Non-contact monitoring of fluid characteristics in wastewater transport systems28 Jul 2026US 12,693,211 B2Kando Environmental Services Ltd
- Apparatus, system, sensor and method for determining dissolved oxygen content in a medium9 Jun 2026US 12,650,417 B2City University of Hong Kong
- Water quality monitoring device and monitoring method thereof21 Apr 2026US 12,607,617 B2Industrial Technology Research Institute
- Method and device for chemical-free determination of the chemical oxygen demand (CSB) in aqueous samples7 Apr 2026US 12,596,113 B2Friedrich-Schiller-Universitaet Jena
- Reagent set12 Feb 2026US 2026/0043780 A1Endress+Hauser Conducta GmbH+Co. KG
- Floating water quality measuring device18 Dec 2025US 2025/0383334 A1
- Method of measuring chemical oxygen demand (cod) in seawater10 Apr 2025US 2025/0114751 A1King Fahd University of Petroleum and Minerals
- Water quality monitoring method and device20 Mar 2025US 2025/0093294 A1University of Newcastle Upon Tyne
- Screen-printed electrode and manufacturing method thereof9 Jan 2025US 2025/0012773 A1Consejo Superior de Investigaciones Cientificas
Most cited
By later US patents
- Coulometric analysis method and a device therefor55US 5,726,565 ANakano Vinegar Co., Ltd. · 1998
- Activated sludge method47US 4,655,925 ANishihara Environmental Sanitation Research Corporation Limited · 1987
- Method of monitoring surface associated microbiological activity in process streams40US 7,949,432 B2Nalco Company · 2011
- Method of monitoring bulk (total) microbiological activity in process streams40US 7,981,679 B2Nalco Company · 2011
- Method and instrument for measuring differential oxygen concentration between two flowing gas streams36US 5,542,284 AQueen's University at Kingston · 1996